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Ohm's Law
1)Which Law explains the following. At constant temperature the current flowing through a conductor is directly proportional to the potential difference between its ends.

2)The current through a wire depends on?

3)Which of the following is an example for Ohmic resistor?

4)What is reciprocal of resistivity called?

5)Which of the following statement does not represent Ohm's Law?

6)The work done in moving a unit positive charge across two points in an electric circuit is a measure of ___________.

7)The potential at a point is 20 V. The work done to bring a charge of 0.5 C from infinity to this point will be ________.

8)The device used for measuring potential difference is known as _____________.

9)The unit of resistivity is ____________. Answer: 3

10)The unit of current is _____________.

11)Two electric bulbs of 100 W, 200 V are put in series and the combination is supplied 100 V. The power consumption of each bulb will be

12)Ohm's law is not applicable to

13)Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is

14)Resistivity of a wire depends on

15)Ohm's law is a relationship between

16)If current through a resistance is halved

17)Ohm's law describes the mathematical relationship between

18)If voltage across a resistance doubles

19)If the resistance in a circuit with constant voltage increases, the current will

20)If doubling the voltage across a resistor doubles the current through the resistor then